Heating or cooling system



HEATING OR COOLING SYSTEM Filed July 2, 1955 Awe swam kw J. 5. Ju l ian Patented May a, 193? ED TT HEATWG R GQQEJING SYSTEM .30 a. nines, Lincoln, Nebr.

Application July 2, 1935, Serial No. 29,553

My invention relates to heating or cooling systems, its primary object being the provision of a construction which is low in cost of installation and operation for effectively heating or cooling the rooms of a dwelling or other building.

An important object of the invention is the provision of a device which may be installed in the jacket of the furnace which is already installed, the device being also adapted to be used with a stove or other heating device.

Another object of the invention is the provision of a warm water heating system in which the pressure of the system is at the minimum,

} the system being open so that no internal pressures can be developed.

Another object of the invention is the provision of a heating device for receiving water from a heater through which the water is circulated, the heated water passing through units 0 which are placed in a forced draft to force the warm air through the furnace pipes.

- Another object of the invention is the provision of a heating system embodying the circulation of warm water through heating units, the arrangement being such that cold water may be passed through the units in a reverse direction for cooling purposes.

Having in view these objects and others which will be pointed out in the following description,

. I will now refer to the drawing, in which The figure is a view partly in diagram and partly in vertical section showing my heating or cooling device as applied to a furnace.

In the installation of my device I employ the jacket it of the ordinary furnace. I first remove all the castings of the furnace so that nothing is left but the jacket with warm and cold air pipes and with the door for closing the jacket. The furnace may be of the usual type with a cold air pipe l l and with a plurality of hot air pipes it but it is obvious that the furnace might be either the pipeless or the semi-pipeless type. The installation may in fact be made in a stove.

Inside the jacket is placed a conduit it for directing the-warm or cold air to ;and through the pipes l2. The lower extremity of this conduit 83 is funnelshaped and a fan M is positioned within the conduit is at its narrowest and lowermost point. It is obvious that the fan M will receive the air from the pipe l i and force it upwardly to and through the pipes l2 regardless of whether the air is warm or cold.

on opposite sides of the conduit is there are two manifolds lb and it. The manifold It is at a somewhat lower level than that of the manifold 85. These manifolds are provided with plugged connections ii. so that the units it? may be attached after first removing the plugs. The position of the manifolds l5 and it is such that the units it will be inclined from the, manifold toward the manifold it, this arrangement being desirable for preventing air locks and facilitation draining. The number of the units it will naturally depend on the requirements of the system. In some cases a single unit it will be suincient. The manifolds it; and iii are therefore made to provide connections for a plurality of units it so that if the number is insufficient for the required results, an additional unit or units 08 may be added.

At i9 is shown a gas water heater having a flue 2t and a gas burner 20. The gas line 22 conducts the gas to the burner 52!! and it is provided with a shutoff valve 28. The gas heater is is preferably of the double coil type as shown, the water line for conducting the water through the heater being shown at 2 3. This water line has a shutofi valve and the water line itself has a T with connections 2d and 2? for conducting water through the coil and through the manifold it respectively. A shutofi valve 23 will determine whether or not the water is to pass through the heater is.

The water passes through the double-coil and becomes heated from the flame of the gas burner Zn. The outlet conduit is shown at 29 for conducting the water to the conduit 3t. Another shutofi valve 3! is positioned in the conduit 29, this valve as well as the valve 2&5 being open when the water is to be heated and being closed when the water is not to be heated. The conduit 29 is also provided with a thermometer 32 for indicating the temperature of the water in the conduit.

The vertical conduit Bil is connected at its lower extremity with the manifold is and at its upper extremity with the expansion tank 33. The tank 33 may be secured at any desirable level but this level should be low enough to hold down the pressure within the system. The tank 33 is provided in its upper surface with an outlet and conduit 36 which leads to any convenient position and which is always open. During cold weather there is almost no evaporation so that the shutoff valve 25 may be opened only on occasion to replace the slight loss of water in the system. The system is automatically regulated through a thermostatic valve 85 for governing the rate of flow of gas to the burner and by a thermostat tt responsive to room temperatures. for

opening and closing a circuit 31 to the fan I4, the valve 35 being responsive to the temperature of the water entering the water heater.

During cold' weather the water is heated in the heater l 9 and it then flows upwardly through the conduit 29 and into the conduit 30. From thence it flows through the manifold l5 and through the units l8 and through the manifold I6, being discharged through the conduits 21 and 26 to complete the circuit to the coil in the heater. The circuit is thus complete, the heated water entering the manifold i5 and then passing through the .units I8 to enter the heater l9 after the wa ter has been cooled. During the heating the expansion tank 33 serves merely to take care of the expansion and contraction of the water.

During warm weather the shutoff valves 23, 28 and 35 are closed to entirely disconnect the heater as and to stop the operation of the burner 2!. Water is then forced through the water line 25 and it passes directly into the manifold it and through the units l8, upwardly through the manifold l5 and the conduit 30, being finally discharged through the expansion tank 33 and the conduit 3 While this water is passing through the units It the fan M will maintain a forced draft so that the air entering the living rooms will be cooled by the cold water in the units it. This cooled air will then be forced out through the pipes i2.

During summer weather a continuous stream of cold water passes through the system. This is discharged through the conduit 34 which may then be connected either with a drain pipe in the sewer system or be discharged through the mouth of the conduit 3% onto-the lawn or garden.

The units 88 are radiator units for conveying water or other heating or cooling liquids. The walls are made light and of a material which readily conducts heat through the walls so that during winter the warm water passing through the raditor units will readily transfer its heat to the air which is driven upwardly by the fan M.

During the summer when cold water is moving in a slow stream or trickle through the radiator imits 58 the heat of the current of air will be absorbed through the walls of the radiator units to be carried away by the stream of water. The water leaving the system through the outlet pipe 3% may then be used on the lawn or garden to better advantage than the water coming directly from the water system.

The tank 33 is strictly an expansion tank and not a pressure tank since it is desirable in the present system to maintain the pressure at a relatively low point. In special installations where somewhat higher pressure is desired, the expansion tank 33 may be placed at any desired height, there being about one pound additional pressure for every additional foot in the elevation of the expansion tank. The warm water has a greater volume than cold water and sincethere is some fluctuation in the temperature of the water in thewater circulation system, the expansion tank 33 will take care of these variations without danger of overflow and the loss of the heat resulting from the overflow of warm water.

Having thus described my invention in such full, clear, and exact terms that its construction and operation will be readily understood by others skilled in the art to which it pertains, what I claim as new and desire to secure by Letters Patent of the Umted States is:

1. In a heating or cooling system adapted for installation in ,a furnace jacket or the like, said system including a vertical air conduit in the furnace jacket and spaced from the walls thereof, a plurality of inclined heating or cooling units within said air conduit, a pair of manifolds in the space between said air conduit and the walls of the furnace jacket, connections between said units and each of'said manifolds, means for circulating water at predetermined temperatures through said manifolds and through said units, the lower end portion of said air conduit being funnel-shaped, a fan within the lower end portion of said air conduit for creating an upwardly directed forced draft past said units and. through the hot air pipes of the furnace jacket, and thermostatically operable means responsive to the room temperatures for governing the operation of said fan.

2. A heating or cooling system including a furnace jacket or the like, a vertical air conduit within said furnace jacket and spaced from the outer walls thereof, said air conduit being open at its upper and lower extremities, an electric fan in the lower opening of said air conduit for forcing air upwardly through said conduit and through the warm air pipes of said furnace jacket, a thermostatic control responsive to room temperatures for automatically governing the operation of said electric fan, a plurality of heating or cooling units within said air conduit for conducting water in either direction therethrough, a pair of manifolds communicating with said units, said manifolds being positioned within the space between said air conduit and the walls of said furnace jacket, a gas burner and a gas line leading thereto, a shutofi valve in said gas line, a water heating coil above said gas burner, a water conduit between said coil and one of said manifolds, a thermostatic valve between said gas line and said water conduit and being responsive to the temperature of the water in said water conduit for automatically-regulating the flow of gas to said gas burner, an open expansion tank, a second water conduit between said expansion tank and the second of said manifolds, a third water conduit from said coil to said second water conduit, a shutofl valve in said third water conduit, a water line to the first of said water conduits, and a shutofi valve in said water line, the arrangement being such that when the shutoff valve in said water line is closed and the other shutofi valves are open, the water will pass through said coil and through said units in one direction to warm the air flowing upwardly through said air conduit and that when the shutoff valve in said water line is open and all of the other shutoff valves are closed, the water will flow through said units in the reverse direction to cool the air flowing upwardly through said conduit, the water being then discharged through said expansion tank.

3. In a heating or cooling system adapted for installation in a furnace jacket or the like, said system including an air conduit in the furnace jacket and spaced from the walls thereof, a plurality of inclined heating or cooling units within said air conduit, a pair of manifolds in the space between said air conduit and the Walls of the furnace jacket, connections between said units and each of said manifolds, means for circulating water at predetermined temperatures through said manifolds and throughsaid units, a fan within said air conduit for creating a forced draft past said units and through the warm air pipes of the furnace jacket, and thermostatically operable means responsive to the room temperatures for governing the operation of said fan.

4. A conduit and a fan for forcing air therethrough and a pair of manifolds on opposite sides thereof, a plurality of heat exchanging units within said air conduit, a plurality of valved pipes projecting from said manifolds through the walls of said air conduit and to said heat exchanging units whereby water of predetermined temperatures may be forced in either direction through said manifolds and through said units, a valved connection between the firstpf said manifolds and the Water line, an expansion tank for receiving the water from thesecond of said manifolds, an overflow drain froni said expansion tank, a water heater having connection for receiving water from the water line through said valved conduit, and a second valved conduit for conveying the heated water from said water heater to the second of said manifolds, the arrangement being such that when said first valved conduit is open and said second valved conduit is closed the water at water line temperature will flow from said first manifold to said second manifold to be discharged through said overflow drain and when said firstvvalved conduit is closed and said second valved conduit is open the heated water from said water heater will flow from said second manifold to said first manifold to be circulated through both of said manifolds and through said units and through said water heater.

JOHN B. JULIAN. 

